Manchester United manager Ole Gunnar Solskjaer to BBC Sport: "The players have reason to be confident because they are playing fantastically. There is quality in that team, our players are fit and we have competition for places now.
"We know Mason Greenwood can score goals like this but he is getting stronger, lockdown helped him. He had time to fill out and you can see the benefit from it. He will be exciting to follow.
"I've got more than one game-changer. We have some top players and Bruno has come and been fantastic. He has brought that winning mentality with him, that 99% is not good enough - it has to be 100%."
Brighton boss Graham Potter to Sky Sports: "We played against a really good side tonight. Manchester United were the better team and they had some quality. Our response in the second half was really good and maybe deserved a goal but the better team won. I am proud of how the players stuck at it and kept going.
"We got killed on the counter attack for the third goal but we had some good play but against United you are always on the stretch. It is a tough evening for us but one we will take a lot from and learn from it.
"We always look at ourselves to try to improve and they are as good as anyone we have played this year. It is hard to contain but a positive performance in the second half."